[Water Environment Characteristics and Water Quality Assessment of Typical Lakes in Inner Mongolia].

• DOI: 10.13227/j.hjkx.202212207
• Publication Date: 2023-12-08
• Authors: Xinyuan Wang; Baozhu Pan; Lixin Wang; Tiejun Liu; Zilong Liao; Xu Han; Zijie Yang
• Keywords: Inner mongolia

Lakes on the Inner Mongolia Plateau, located in ecologically fragile area of northern border China, play a very important role regulating regional climate and ecological environment maintaining biodiversity. Owing to dual influence natural factors human factors, lake water is facing challenges. To clarify overall quality lakes Mongolia, based data typical autumn 2019(October-November) summer 2021(July-August), temporal spatial variation was discussed, different indexes analyzed, key affecting were identified. The results showed as follows:① spatiotemporal distribution multiple physicochemical indices two seasons. On time scale, concentration ammonia nitrogen(NH4+-N) nitrite nitrogen(NO2--N) lower than that summer, whereas dissolved oxygen(DO) higher summer. concentrations total phosphorus(TP), nitrogen(TN), chemical oxygen demand(COD), salinity(Sal) other indicators southwest those northeast, but DO index opposite trend. ② Dissolved solids(TDS) main characteristic factor Mongolia. ③ index(WQI) significantly different. level decreased with increase TDS, better